Rollei Fototechnic Gmbh

Bjoern Weidmann

The invention relates to an interchangeable miniature-film magazine having a receiver for a film cassette, a sprocket for the film advancement, a winding drum, and a shutter for closing the film gate provided in the magazine housing. In order to provide as compact a design as possible, the sprocket can be located immediately behind the cassette outlet, at a clear distance which is smaller than the width of the film gate across. The unexposed film, which is previously wound completely onto the winding drum in the prewind operation, with the winding direction of the film on the winding drum being identical to that of the spool body of the film cassette, is guided from the winding drum, arranged closely alongside the film cassette, in a large radius around the film cassette into the plane of the film gate, with a subsequent, nearly 180&deg;-deflection around the sprocket into the cassette outlet.

Interchangeable miniature-film magazine

A receiving device for a film cassette, having a light-proof housing. The housing includes a film-advancing device which is assigned a gripping region for the start of the film projecting out of the film cassette. In order to facilitate insertion of the film into the camera body or into a magazine, the receiving device can be pivoted or drawn out of the housing, with parallel shifting of the axis of rotation of the receiving device, thus allowing insertion or removal of the film cassette. In the open position the inserted film cassette is spaced apart from the film-advancing device by a greater distance than in the closed position. The distance of the inserted film cassette from the gripping region in the open position is of such a size that the start of the film projecting out of the film cassette, even in the case of the smallest commercially available length, extends almost right up to the gripping region. The receiving device has a rotatably mounted cassette driver which, via a form fit or friction fit, is in rotational connection with the inserted film cassette. Upon closure of the receiving device, the cassette driver, under the action of a pushing force directed from the start of the film onto the film outlet, can be rotated, counter to the action of a resiliently elastic element, in a direction which is oriented counter to the closing movement of the receiving device. As a result, upon closure of the receiving device, the start of the film in the gripping region is retained.

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Braunschweig, Germany

Bjoern Weidmann